Merge pull request #113 from VsSekorin/rmn

#112 RemoveNode

src/main/java/com/vssekorin/cactoosmath/graph/GraphOf.java

@@ -37,7 +37,7 @@
  * @param <T> Type of matrix
  * @since 0.1
  */
-public class GraphOf<T> extends GraphEnvelope<T> {
+public final class GraphOf<T> extends GraphEnvelope<T> {
 
     /**
      * Ctor.

src/main/java/com/vssekorin/cactoosmath/graph/RemoveNode.java

@@ -0,0 +1,70 @@
+/**
+ * MIT License
+ *
+ * Copyright (c) 2017-2018 Vseslav Sekorin
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.vssekorin.cactoosmath.graph;
+
+import com.vssekorin.cactoosmath.Graph;
+import java.util.List;
+import java.util.Map;
+import org.cactoos.Scalar;
+import org.cactoos.collection.Filtered;
+import org.cactoos.list.ListOf;
+import org.cactoos.scalar.UncheckedScalar;
+
+/**
+ * Graph without node.
+ *
+ * @author Vseslav Sekorin (vssekorin@gmail.com)
+ * @version $Id$
+ * @param <T> Type of matrix
+ * @since 0.1
+ */
+public final class RemoveNode<T> extends GraphEnvelope<T> {
+
+    /**
+     * Ctor.
+     * @param graph Origin graph
+     * @param node Scalar of node
+     */
+    public RemoveNode(final Graph<T> graph, final Scalar<T> node) {
+        this(graph, new UncheckedScalar<>(node).value());
+    }
+
+    /**
+     * Ctor.
+     * @param graph Origin graph
+     * @param node Node
+     */
+    public RemoveNode(final Graph<T> graph, final T node) {
+        super(() -> () -> {
+            final Map<T, List<T>> result = graph.asMap();
+            result.remove(node);
+            result.replaceAll(
+                (elem, list) -> new ListOf<>(
+                    new Filtered<>(t -> !t.equals(node), list)
+                )
+            );
+            return result;
+        });
+    }
+}

src/test/java/com/vssekorin/cactoosmath/graph/RemoveNodeTest.java

@@ -0,0 +1,55 @@
+/**
+ * MIT License
+ *
+ * Copyright (c) 2017-2018 Vseslav Sekorin
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.vssekorin.cactoosmath.graph;
+
+import org.cactoos.list.ListOf;
+import org.hamcrest.CoreMatchers;
+import org.hamcrest.MatcherAssert;
+import org.junit.Test;
+
+/**
+ * Test case for {@link RemoveNode}.
+ *
+ * @author Vseslav Sekorin (vssekorin@gmail.com)
+ * @version $Id$
+ * @since 0.1
+ * @checkstyle JavadocMethodCheck (500 lines)
+ * @checkstyle MagicNumberCheck (500 lines)
+ */
+public final class RemoveNodeTest {
+
+    @Test
+    public void asMap() throws Exception {
+        MatcherAssert.assertThat(
+            new RemoveNode<>(
+                new GraphOf<>(
+                    new ListOf<>(1, 2, 3),
+                    node -> new ListOf<>(1, 2, 3)
+                ),
+                2
+            ).asMap().get(1),
+            CoreMatchers.hasItems(1, 3)
+        );
+    }
+}

src/test/java/com/vssekorin/cactoosmath/graph/package-info.java

@@ -0,0 +1,32 @@
+/**
+ * MIT License
+ *
+ * Copyright (c) 2017-2018 Vseslav Sekorin
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/**
+ * Tests for graphs.
+ *
+ * @author Vseslav Sekorin (vssekorin@gmail.com)
+ * @version $Id$
+ * @since 0.1
+ */
+package com.vssekorin.cactoosmath.graph;